diff options
| author | Alex Deucher <alexander.deucher@amd.com> | 2024-10-31 13:51:35 -0400 |
|---|---|---|
| committer | Alex Deucher <alexander.deucher@amd.com> | 2024-12-18 12:16:01 -0500 |
| commit | 7e50642d41050c2182368171d5afb0543b38f379 (patch) | |
| tree | 1683a37fe71c72df1ed1b1cc5343a2c36a65eed2 /drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | |
| parent | 736692c3b7c072eb25d64ee5aca29bb525f3818f (diff) | |
drm/amd/display: add non-DC drm_panic support
Add support for the drm_panic module, which displays a pretty user
friendly message on the screen when a Linux kernel panic occurs.
Adapt Lu Yao's code to use common helpers derived from
Jocelyn's patch. This extends the non-DC code to enable
access to non-CPU accessible VRAM and adds support for
other DCE versions.
Reviewed-by: Harry Wentland <harry.wentland@amd.com>
Signed-off-by: Alex Deucher <alexander.deucher@amd.com>
Cc: Lu Yao <yaolu@kylinos.cn>
Cc: Jocelyn Falempe <jfalempe@redhat.com>
Cc: Harry Wentland <harry.wentland@amd.com>
Diffstat (limited to 'drivers/gpu/drm/amd/amdgpu/dce_v11_0.c')
| -rw-r--r-- | drivers/gpu/drm/amd/amdgpu/dce_v11_0.c | 27 |
1 files changed, 27 insertions, 0 deletions
diff --git a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c index 504939e3c0c3..ea42a4472bf6 100644 --- a/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c +++ b/drivers/gpu/drm/amd/amdgpu/dce_v11_0.c @@ -2800,6 +2800,32 @@ static const struct drm_crtc_helper_funcs dce_v11_0_crtc_helper_funcs = { .get_scanout_position = amdgpu_crtc_get_scanout_position, }; +static void dce_v11_0_panic_flush(struct drm_plane *plane) +{ + struct drm_framebuffer *fb; + struct amdgpu_crtc *amdgpu_crtc; + struct amdgpu_device *adev; + uint32_t fb_format; + + if (!plane->fb) + return; + + fb = plane->fb; + amdgpu_crtc = to_amdgpu_crtc(plane->crtc); + adev = drm_to_adev(fb->dev); + + /* Disable DC tiling */ + fb_format = RREG32(mmGRPH_CONTROL + amdgpu_crtc->crtc_offset); + fb_format &= ~GRPH_CONTROL__GRPH_ARRAY_MODE_MASK; + WREG32(mmGRPH_CONTROL + amdgpu_crtc->crtc_offset, fb_format); + +} + +static const struct drm_plane_helper_funcs dce_v11_0_drm_primary_plane_helper_funcs = { + .get_scanout_buffer = amdgpu_display_get_scanout_buffer, + .panic_flush = dce_v11_0_panic_flush, +}; + static int dce_v11_0_crtc_init(struct amdgpu_device *adev, int index) { struct amdgpu_crtc *amdgpu_crtc; @@ -2847,6 +2873,7 @@ static int dce_v11_0_crtc_init(struct amdgpu_device *adev, int index) amdgpu_crtc->encoder = NULL; amdgpu_crtc->connector = NULL; drm_crtc_helper_add(&amdgpu_crtc->base, &dce_v11_0_crtc_helper_funcs); + drm_plane_helper_add(amdgpu_crtc->base.primary, &dce_v11_0_drm_primary_plane_helper_funcs); return 0; } |